Solution

The best solution is to tell the management agent which subnet to use
(set ma.server.mainternal.interfaces in the configuration
file, e.g., ma.server.mainternal.interfaces=10.11.100.0).
Alternatively one may configure the router between the subnets to route multicast
packets (the management agent uses multicast address 228.8.8.8).

Before retrying with a new configuration of the management agents, you
may have to clean up the management agent repository. Stop all agents in the
domain, and delete all files and directories in the repository directory (identified
by repository.dr.path in the management agent configuration
file). This must be done on all hosts before restarting the agents with a
new configuration file.